CAT PUMPS
CAT PUMPS

High Pressure Piston Pump · Frame size 4 PFR

333

This triplex (three piston rods) positive displacement, reciprocating piston pump is constructed with chrome-plated brass manifolds, 304 stainless steel valve assemblies, and chrome-plated 304 stainless steel sleeves and cylinders. Multiple piston cup and seal configurations are available with NBR (Buna-N) O-rings.

The lower RPM belt drive design provides strong inlet suction and long-lasting pump and seal life.

Technical specifications

Flow rate 15 l/min
Operating pressure 85 bar
Speed 1,070 min⁻¹
Inlet port 1"
Discharge port 3/8" / 1/2"
Shaft diameter 16.5 mm
Material Brass

Downloads

CAD files

Spare parts

Click an item in the drawing or in the parts list to add it to your request list. We turn it into a quotation – no order is placed.

3 kits bundle wearing parts of this pump ↓

Skip the drawing, go to the parts list

Exploded view

Exploded view 333

Parts list

ItemPart no.DescriptionQtyAdd to request list
5125824Screw, HHC Sems (M6x16) 8/4STCP8
827950Cover, BearingAL2
1026536O-Ring, Bearing Cover - 70DNBR2
1124159Seal, Oil, CrankshaftNBR2
1514487Bearing, BallSTL2
2048734Rod, Connecting, AssemblyTNM3
2543163Crankshaft, Dual End, Tapped (M8 x 1.25)FCM1
3243211Cap, Oil FillerABS1
3314177O-Ring, Oil Filler Cap - 70DNBR1
3792241Gauge, Oil, Bubble with Gasket - 80D 1 - 2PC1
3844428Gasket, Flat, Oil Gauge - 80DNBR1
40126541Screw, HHC Sems (M6 x 20)STCP4
4825625Plug, Drain (1/4" x 19 BSP[M])STCP1
4923170O-Ring, Drain Plug - 70DNBR1
5048772Cover, Rear [07/08]AL1
5148773O-Ring, Rear Cover [07/08]NBR1
5376953Crankcase with Guide PinsAL1
55126546Stud (M8x41.4)STCP2
5627712Pan, Oil (Use with Blue Dot Seals and Wick)POP1
6416948Pin, CrossheadCM3
6527981Rod, Piston, SteppedSZZ3
69126259Washer, Oil SealSTCP3
7025301Seal, Oil - 80DNBR3
71126189Washer, Oil SealSTCP3
7525327Slinger, BarrierS3
7725392O-Ring, Sleeve 6/3NBR6
8025299SleeveSCP3
10027710Retainer, SealPVDF3
10127711Wick, Long Tab (Use with Blue Dot Seals and Oil Pan)3
10630315Seal, Low-Pressure, (Greased)NBR3
10922177Plug HH (1/4" NPT)BBCP1
11025128Manifold, Inlet (Models 333, 430)BBCP1
11822160Elbow, Street [1/2" NPT(M)]BBCP3
11927004Valve, InletS3
11928339Valve, InletS3
13022021PistonS3
13328955Cup, Piston (Machined Cup - Models 331, 333)NBR3
13343172Cup, Piston (Machined Cup - Models 331, 333)FPM3
13527983Spacer, PistonS3
13627002Retainer, PistonS3
13727006Washer, Conical (M6)S3
13827000Nut, Slotted (M6)S3
13914158Cotterpin (M1.6 x 10)S3
14323172O-Ring, Cylinder - 70DNBR6
15024285CylinderSCP3
15025660CylinderSCP3
15321985Backup Ring, SeatPTFE3
16443434Seat, Q.V.S3
16643723Valve, Q.V.S3
16743360Spring, Q.V.S3
16843442Retainer, Spring, Q.V.S3
18524459Manifold, Discharge (Models 333, 430)BBCP1
186126232Lockwasher (M8)STCP2
187126564Bolt, Cylinder (M8)STCP2
188126591Washer, Shim (M8 x 2 x 13) 2 - 4STCP2-4
189126813Washer, Shim (M8 x 1 x 13) 2 - 4STCP2-4
190126576Washer, Shim (M8 x .5 x 13) 2 - 4STCP2-4
191126590Washer, Shim (M8 x .3 x 13) 2 - 4STZP2-4
19226676Retainer, Shim (M8)S2
194126201Nut, Hex Flange (M8)STCP2
19622187Plug, Discharge (3/8" NPT[M]) (Not Shown)BBCP1
–6124Gasket, Liquid (3 oz. / 0,1 l)1
–6139Lubricant, Anti-Seize (8 oz) (Model 1531)1
–6340Pump, Pulse (Not Shown)1
–6400Manifold, Pulse Pump (Models 335, 435)BB1
–25130Protector, Shaft1
–25634Manifold, Discharge (Models 331, 431)SS1
–25635Manifold, Inlet (Models 331, 431)SS1
–28460Sleeve (Unchromed) (323)S3
–29044Cylinder (Unchromed)S3
–30047Key (M5 x 5 x 24)1
–30243Mount, Direct (Belt-Drive Only)1
–30305Kit, Seal - Standard NBR1
–34334Kit, Oil Drain (3/8" x 24") (Not Shown) 11
–126610Mounting, Angle Rail (STZP R)1
–828710Protector, Oil Cap with Foam Gasket 11
–6132Oil, Crankcase, Bottle 1l1

in the request listcovered by a requested kit

Seal and valve kits

A kit bundles the wearing parts of one assembly. Selecting it highlights the items it covers in the drawing and the parts list – once requested, they stay marked.

Valve kits

  • Valve kit

    30024

    NBRMedium Nitrile (Buna-N)

    contains 5 items · one kit per pump

    Parts list
    • 14323172O-Ring, Zylinder6×
    • 16429487Ventilsitz3×
    • 16622842Ventil3×
    • 16722031Feder, Ventil3×
    • 16822841Federhalter, Ventil (2 Stk. für 30103)3×
  • Valve kit

    30103

    NBR (PULSE)Medium Nitrile (Buna-N)

    contains 5 items · one kit per pump

    Parts list
    • 14323172O-Ring, Zylinder6×
    • 16429487Ventilsitz3×
    • 16622842Ventil3×
    • 16722031Feder, Ventil3×
    • 16822841Federhalter, Ventil (2 Stk. für 30103)3×
  • Valve kit

    30686

    NBRMedium Nitrile (Buna-N)

    contains 5 items · one kit per pump

    Parts list
    • 14323172O-Ring, Zylinder6×
    • 16443434Ventilsitz3×
    • 16643723Ventil3×
    • 16743360Feder, Ventil3×
    • 16843442Federhalter, Ventil (2 Stk. für 30103)3×

More models in frame size 4 PFR

High Pressure Piston Pump 331

331

Flow rate
15 l/min
Operating pressure
85 bar
Speed
1,070 min⁻¹
Material
Stainless Steel
High Pressure Piston Pump 430

430

Flow rate
19 l/min
Operating pressure
70 bar
Speed
1,040 min⁻¹
Material
Brass
High Pressure Piston Pump 431

431

Flow rate
19 l/min
Operating pressure
70 bar
Speed
1,040 min⁻¹
Material
Stainless Steel

View all piston pumps →

High Pressure Piston Pump 333
333 · High Pressure Piston Pump